Mechanical movement



(No Model.)

J. H. PALMER.

' MEOHANIGAL MOVEMENT. 1 No. 305,530. Patented Sept. 23,1884.

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ATENT MECHANICAL MOVEMENT.

SPECIFICATION forming part of Letters Patent No. 305,530, dated September 23, 1884.

Application filed February 20, 1884.

I aZZ whom it may concern:

Be it known that I, JOHN H. PALMER, of the city and county of Philadelphia, and State of Pennsylvania, have invented an Improvement in Mechanical Movements, of which the following is a specification.

My invention has reference to mechanical ,movements; and it consists in certain imlever, I, and a band-wheel, B, are pivoted or journaled. The armfl has pivoted to it at G a small lever, D, provided with a pin, E.

N is a pin secured to the arm 0, which 1im its the throw of the lever D upon arm 0 in one direction.- A friction-band, F, encircles the band-wheel B, and has its ends secured to the fulcrum G of the small lever D, and to the pin E secured thereon, so that when said lever is moved in one direction the band is tightened about the wheel 13 and clamps it, but when moved in the other direction unclamps it. This lever and its arm 0 are vibrated by a lever, I, actuated by a reciprocating rod, J, which presses against the curved end H of lever D. An adjusting-screw, K, carried by the arm 0 and working against a lug, L, on bed-plate A, controls the angle through which the wheel B is turned at each vibration of lemanner as to keep it pressed against its stop N and the friction band F loose when unacted upon.

The operation is as follows: As the lever I (No model.)

is vibrated, it presses upon the end H of lever D, which immediately tightens the band F and clamps the wheel B. Then any further movement of lever I moves both arm 0 and lever F, turning the wheel B also.

If desired, the screw K may be supported by lug L, and the lever I may work against the other end of the lever D, and separate springs may be used for the arm G andlever D, if desired.

While I prefer the construction shown on account of its simplicity, I do not limit myself to the details, as they may be modified in Various ways without departing from my invention.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. I11 amechanical movement, aband-wheel, in combination with a vibrating arm, a lever carried by said arm, to which the power is applied, and a friction-band encircling the bandwheel, having one end attached to the vibrating arm and the other to the lever, substantially as and for the purpose specified.

2. In a mechanical movement, aband-wheel, in combination with a vibrating arm, means to regulate the vibrations of said arm, a lever carried by said arm, to which the power is applied, and a friction-band encircling the bandwheel, having one end attached to the vibrating arm and the other to the lever, substair tially as and for the purpose specified.

3. In a mechanical movement, a band-wheel, in combination with a vibrating arm, a lever carried by said arm, to which the power is applied, a spring arranged to pull said lever always in the same direction, and a frictionbaild encircling the band-wheel, having one end attached to the vibrating arm and the other to the lever, substantially as and for the purpose specified.

4. The combination of stud A, arm 0, lever D, band F, wheel B, and means to vibrate said lever D, substantially as and for the purpose specified.

5. The combination of stud A, arm 0, having pin N, lever D, spring M, band F, wheel B, and means to vibrate said lever D, substantially as and for the purpose specified.

6. The combination of stud A, arm 0, ad-

justing-screw K, lever D, band F, wheel B, D, band 13, wheel B, and lever I, pivoted to 10 and means to vibrate said lever D, substanstud A to vibrate said lever D, substantially tially as and for the purpose specified. as and for the purpose specified.

7. The combination of stud A, arm G, hav- In testimony of which invention I hereunto 5 ing pin N,'adjusting-screw K, lever D, spring set my hand.

M, band F, wheel B, and means to vibrate said JOHN H. PALMER. lever D, substantially as and for the purpose Witnesses: specified. R. M. HUNTER,

L 8. The combination of stud A, arm 0, lever FRANCIS S. BROWN. 

